Improvement in axle-lubricators for carriages



C. POLLEY.

Axle-Lubricator No 44.338 Patented Sept. 20, 1864.

'lw as.

. device which I claim as my invention.

UNITED STATES PATENT CLARK POLLEY, OF SCOTT, OHIO.

IMPROVEMENT IN AXLE-LUBRICATORS FOR CARRIAGES.

To all whom it may concern:

Beitknown that I, CLARK POLLEY, of Scott, in the county of Adams and State of Ohio, have invented a new and Improved Axle-Lubricator; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to theaccompanying drawings, forming part of this specification, in which- Figure 1 represents a longitudinal central s ction of my invention. Fig. 2 is .a transverse section of the same, taken in the plane indicated by the line 00 m, Fig. 1. Fig. 3 is a transverse section of the-cylinder detached.

Similar letters of reference indicate like parts.

This invention consists in the employment or use of a cylinder, inserted into the hub of a Wheel, and provided with a piston, which is atttched to a screw-spindle screwing into a cap that closes the outer end of the cylinder in such a manner that by the action of the piston gr ase or lubricating material placed in the C \ll[ld1 can gradually be forced down upon the axle, and by the cap the escape of any part of said grease as the wheel turns is effectually prevented. To prevent the piston from turning within the cylinder, it is pro- Vided with a groove, which worksinto afeather on the inside of the cylinder.

A represents the hub ofa wheel, constructed of wood or any other suitable material in the usual form and manner. It is bored out in a longitudinal direction, to receive the axle and a hole, a, bored transversely through the side of the hub, serves to receive the lubricating This device consists of a cylinder, 1), which is firmly secured in the hole a. It is open on the inside; but its outer end is closed by a cap, 0, which ought to be secured so that it can be removed when it is desired to introduce the lubricating material. This cap is bored (ut and grooved to receive the collar 0 of the screwspindle e, which is tapped into the pistonf. The collar 0 is secured to the cap cin such a manner that the screwspindle can rotate independent of the cap, but is prevented moving in a longitudinal direction, and by turning said spindle the piston is compelled to move in the cylinder in a longitudinal direction.

The outer end of the screw-spindle is made square, or otherwise arranged to receive a handle, by which said spindle can be turned in either direction, and the piston is prevented from turning within the cylinder by a'feather, h, which projects from the inner surface of the cylinder and catches into a groove in the piston. This feather is shown more particularly in Fig. 3 of the drawings.

In order to introduce grease, the piston is screwed up close under the cap, the cap is taken oft, and the cylinder is charged with the lubricating material nearly full. The cap is then replaced and screwed down tight, and by turning the screw-spindle the piston is caused to act upon the lubricating material and to force the same down upon the axle as it is needed. By this arrangement a quantity of lubricating material can be carried by each hub sufficient to last for a long time, and not a particle of the same is allowed to waste.

I claim as new and desire to secure by Letters Patent- The combination, with the hub A, of the cylinder b, cap 0, screw-spindle 0, piston f, and feather [1, operating substantially as and for the purposes described.

' CLARK POLLEY.

Witnesses:

I. H. DE BRUIN, RICHARD RAMSAY. 

